Catch exceptions during bucket initialize
Catch exceptions during bucket initialize

Catch std::bad_alloc and std::runtime_error thrown during bucket
initialization, and fail bucket creation.

Change-Id: I89d4ee0466026f0036b785616386deb0dfa55877
Reviewed-on: http://review.couchbase.org/56016
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

couchbase/memcached,couchbase/memcached,daverigby/kv_engine,daverigby/memcached,owendCB/memcached,owendCB/memcached,owendCB/memcached,daverigby/memcached,owendCB/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,couchbase/memcached,couchbase/memcached,daverigby/memcached,daverigby/memcached